From The Life and Times of Bruce Gerencser:
Atheists will argue amongst themselves over whether there is anything such as an “atheist community.” Sure, there are atheist, freethought, and humanist groups scattered here and there, but for the most part individual atheists are on their own. And here in rural America? Atheists are typically lone rangers. Is this how atheists want it to be?
Part of the problem is that American atheist groups are dominated by college educated white men. One of the things that irritated me during my Evangelical days was that the conferences I attended featured the same “stars” every time. These big-name preachers became the face of Evangelicalism. So it is with atheist groups. Year after year, the same people are featured at conferences. As a result, these people become the face of American atheism. While there has been an increase of non-white speakers in recent years, the fact remains white dudes rule the roost.
These conferences also tend to be prohibitively expensive for working-class people, and for those of us who live in the heartland, these conferences are often thousands of miles away. Thus, atheist conferences tend to attract the same people over and over and over again.
The future of any atheist group depends on attracting new members. If all godless outsiders see are the same people as the face of the various atheist groups, there’s not much incentive for them to want to join.